Articulate with the frontal bone superiorly, the maxillary bones laterally, and the perpendicular plate of the ethmoid bone posteriorly. Inferiorly, they attach to the cartilages which form most of the skeleton of the external nose.

Lacrimal Bones (2)

Fingernail-sized bones forming a part of the medial orbit walls between the maxilla and the ethmoid.

Articulate with the frontal bone superiorly, the ethmoid bone posteriorly, and the maxillae anteriorly.

Contains the lacrimal fossa.

Lacrimal Fossa

Opening piercing each lacrimal bone.

Palatine Bones (2)

Paired bones posterior to the palatine processes. Form the posterior hard palate and part of the orbit.

Thin, curved bones protruding medially from the lateral walls of the nasal cavity, just inferior to the middle nasal conchae of the ethmoid bone. Largest of the three pairs of conchae. From part of the lateral walls of the nasal cavity.

Appear as flanking projections in the bottom corners of the triangle of the nose.

Articulate with the maxilla and ethmoid bone superiorly

Orbits

Bony cavities in which the eyes are firmly encased.

Made up of the frontal, sphenoid, zygomatic, maxilla, palatine, lacrimal, and ethmoid bones.

Nasal Cavity

Cavity constructed of bone and hyaline cartilage.

The roof is formed by the cribriform plate of the ethmoid.

The lateral walls are largely shaped by the superior and middle conchae of the ethmoid bone, the perpendicular plates of the palatine bones, and the inferior nasal conchae.

The floor is made up of the palatine processes of the maxillae and the palatine bones.

Nasal Septum

Divides the nasal cavity into right and left parts.

Contains the perpendicular plate of the ethmoid bone and the vomer.

Hard Palate

Bony roof of mouth.

Formed from the maxillae and the palatine bones.

Hyoid

U-shaped bone with no articulations located in the throat above the larynx. Serves as a point of attachment for many tongue and neck muscles.

Contains the greater horns, lesser horns, and body.

Greater Horns

Large processes extending from the hyoid body which resemble the horns of a bull.

Lesser Horns

Small processes extending from the body of the hyoid, resembling the ears on a bull's head.

Hyoid Body

Central potion of the hyoid, the top of the "bull's head."

Paranasal Sinuses

The muchosa-lined air-filled sinuses of the skull, flanking the nasal cavity.